Add dimension whitelist option for evil wizard spawning and restrict numbers to 1 per chunk, closes #26

src/main/java/electroblob/wizardry/Settings.java

@@ -121,6 +121,8 @@ public final class Settings {
 	public double playerDamageScale = 1.0f;
 	/** <b>[Server-only]</b> Global damage scaling factor for all npc magic damage. */
 	public double npcDamageScale = 1.0f;
+	/** <b>[Server-only]</b> List of dimension ids in which evil wizards can spawn. */
+	public int[] evilWizardDimensions = {0};
 
 	// Commands (these don't need synchronising since typing a command always queries the server).
 	/**
@@ -506,6 +508,12 @@ public final class Settings {
 		// Converts all strings in the list to a ResourceLocation.
 		mindControlTargetsBlacklist = Arrays.stream(property.getStringList()).map(s -> new ResourceLocation(s.toLowerCase(Locale.ROOT).trim())).toArray(ResourceLocation[]::new);
 		propOrder.add(property.getName());
+
+		property = config.get(Configuration.CATEGORY_GENERAL, "evilWizardDimensions", new int[]{0},
+				"List of dimension ids in which evil wizards can spawn.");
+		property.setLanguageKey("config." + Wizardry.MODID + ".evil_wizard_dimensions");
+		property.setRequiresMcRestart(true);
+		evilWizardDimensions = property.getIntList();
 		propOrder.add(property.getName());
 
 		config.setCategoryPropertyOrder(Configuration.CATEGORY_GENERAL, propOrder);

src/main/java/electroblob/wizardry/entity/living/EntityEvilWizard.java

@@ -265,6 +265,21 @@ public class EntityEvilWizard extends EntityMob implements ISpellCaster, IEntity
 				(NBTTagInt tag) -> Spell.get(tag.getInt()));
 		this.hasTower = nbt.getBoolean("hasTower");
 	}
+	
+	@Override
+	public int getMaxSpawnedInChunk(){
+		return 1;
+	}
+	
+	@Override
+	public boolean getCanSpawnHere(){
+		// Evil wizards can only spawn in the specified dimensions
+		for(int id : Wizardry.settings.evilWizardDimensions){
+			if(this.dimension == id) return super.getCanSpawnHere();
+		}
+		
+		return false;
+	}
 
 	@Override
 	protected boolean canDespawn(){